METHOD AND COMPOSITION FOR THE DEPOSITION OF PALLADIUM LAYERS AND PALLADIUM ALLOY LAYERS

摘要

An electrolytic composition and a method of using the electrolytic composition to deposit palladium or palladium alloy layers is provided which overcomes the problems known from prior art. The electrolytic composition and method of the invention comprises a palladium source, a sulfur-based acid, and a surfactant. To deposit a palladium alloy layer, the electrolytic composition further comprises a source of alloying metal ions. Moreover, the electrolytic composition according to the invention may include additional sulfur- containing amino acids for the deposition of dark palladium layers.